Side by side

Grand Seiko SBGW257vsYema Skin Diver Slim CMM.20

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

SBGW257
Grand SeikoSBGW257
MSRP $38,000
Skin Diver Slim CMM.20
YemaSkin Diver Slim CMM.20
MSRP $2,117

At a glance

14 of 29 specs differ
Diameter
SBGW25738mm
Skin Diver Slim CMM.2047mm
Power Reserve
SBGW25772h
Skin Diver Slim CMM.2040h
Water Resistance
SBGW25730m
Skin Diver Slim CMM.20200m
MSRP
SBGW257$38,000
Skin Diver Slim CMM.20$2,117

Full specifications

Case

7 specs
Category
Dress
Diver
Diameter
38mm
47mm
Thickness
10.9mm
10mm
Lug-to-Lug
45.8mm
47mm
Lug Width
19mm
20mm
Material
Platinum
316L Stainless Steel
Water Resistance
30m
200m

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
Yes
Inner
Dial Color
Black
Steel

Movement

3 specs
Caliber
9S64
Yema CMM.20
Type
Manual
Automatic
Power Reserve
72h
40h

Pricing

1 specs
MSRP
$38,000
$2,117

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Grand Seiko SBGW257

The Grand Seiko SBGW257 is a platinum dress watch praised for its refined, subtle luxury and classic design. Reviewers highlight its 38mm diameter and 10.9mm thickness as near-perfect sizing for a dress watch. The watch features an 18k white gold dial with a sunray-brushed silver finish and gold hour markers, complemented by a refined application of the Grand Seiko wordmark. It is powered by the manual-wind Caliber 9S64 movement, offering a 72-hour power reserve and an accuracy rating of +5 to -3 seconds per day. The Grand Seiko SBGW257 is priced at €39,000. On balance, reviewers appreciate the Grand Seiko SBGW257 for its exquisite finishing and classic proportions, embodying a quiet luxury.

Yema Skin Diver Slim CMM.20

Owners and reviewers widely praise the Yema Skin Diver Slim CMM.20 for its balanced 39mm case, vintage aesthetic, and unique champagne dial. The proprietary CMM.20 micro-rotor movement is a notable feature, though some owners report potential QC issues including erratic timegrapher readings and second-hand stutter. The lume is described as subdued, and while some find the "dragon scale" bracelet beautiful, others consider it generic. The price point is a hurdle for some, and the stamped clasp quality is considered subpar by one reviewer, with a gap noted by an owner. The lack of hacking seconds is flagged as a drawback at its price. Overall, owners and reviewers rate the Yema Skin Diver Slim CMM.20 highly for its vintage charm and balanced wearability.

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